const mongoose = require("mongoose")
//mongoose连接数据库，数据库名：bidding-system
mongoose.connect('mongodb://localhost/bidding-system')

let db = mongoose.connection
db.on('error', console.error.bind(console, 'connection error:'))
db.once('open', () => {
    console.log("数据库连接成功")
});

// 定义schema，schema就相当于一张表的表头
let userSchema = new mongoose.Schema({
    username: { type: String, require: true },
    password: { type: String, require: true }
});

// 将schema 编译成一个 Model
let userModel = mongoose.model('users', userSchema);

// 用model来操作数据库
userModel.insertMany({
    username:"张依依",password:"123456"
}).then(msg=>{
    console.log("插入数据成功",msg)
}).catch(err=>{
    console.log("插入数据失败",err)
})